Search Engine Optimization (SEO) is the process of marketing your website to search engines. Why do you care what search engines think of your website? You care because search engines are the matchmakers of the Internet, pairing every person who enters a search into Google, Bing, Yahoo!, or the many other search engines, with a custom list of every website that pertains to the keywords used in their search. You care because you want to be visible on that list.

So how do Google and its counterparts know which websites to show us when we do a search?